Herbs Farming

Geralt is an expert alchemist but always finds it difficult to find the right herbs. So he started his own farm of herbs, where he would grow his own herbs. Right now, he has $N$ different herbs in a row on his farm. He was getting bored, so he came up with a challenging problem for you: You are allowed to divide the $N$ herbs into non-empty groups by creating some partitions (possibly zero) be